hussein obama, do solemnly swear. >> so help you god? >> so help me god. >> now, the stage is set for a day long party in the nation's capit capitol. we'll take you behind the scenes of the last minute preparation. for the president's speech. the parade, the balls and the tone being set for the battles ahead. >> i say to you, the challenges we face are real. but know this america, they will be met. >> this is cnn's coverage of the presidential inauguration. from the first salute to the last dance. a very vided nation comes together for a celebration of democracy. >> and we remain more than a collection of red states and blue states. we are and forever will be the united states of america. ♪ >>> we're live on the national mall, good evening, everyone, i'm anderson cooper. the lead band leading off the parade is going to be from grambling state university louisiana. they lead off our coverage, take it away, guys. [ cheers and applause ] ♪ ♪ >>> we want to welcome our viewers in the united states and around the world. i'm wolf blitzer here on the national mall in washington, d.